The Httpoxy vulnerability is a security issue that affects web applications that run in CGI environments, such as PHP, Nginx, Apache, and Go. Here’s how to fix the Httpoxy vulnerability: Check for the vulnerability: To check if your web application is vulnerable, you can use a tool such as the Httpoxy Scanner. Patch your web … Read more
On Ubuntu 16.04 LTS, you can use the apt-fast tool to speed up apt-get by downloading packages in parallel from multiple connections. Here’s how to use apt-fast: Install apt-fast: You can install apt-fast using the following command: sudo apt-get update sudo apt-get install apt-fast Configure apt-fast: Once installed, you can configure the number of connections … Read more
To see how long a process has been running on a Linux system, you can use the ps command with the -o and etime options. For example, to see the elapsed time for the process with PID 12345, run the following command: ps -o etime= -p 12345 The etime option displays the elapsed time since … Read more
To set up a UFW firewall on Ubuntu 16.04 LTS server, follow these steps: Install UFW: UFW (Uncomplicated Firewall) is not installed by default on Ubuntu 16.04. You can install it using the following command: sudo apt-get update sudo apt-get install ufw Enable the firewall: After installation, enable the firewall by running the following command: … Read more
To create a RAID 10 (Striped Mirror Vdev ZPool) on Ubuntu Linux, you can use the zpool command line utility. Here’s the step-by-step process: Identify available disks: Before you create the RAID 10 array, you need to identify the available disks. You can use the lsblk command to list all the available block devices on … Read more
The “Too many open files” error can occur in PHP-fpm when the system limit for open file descriptors is reached. To resolve this issue, you can increase the limit for open file descriptors in the system. Here’s how to increase the open file descriptor limit in PHP-fpm: Find the current open file descriptor limit: You … Read more
To configure pfSense as a dual WAN load balancing and failover router, you need to have two WAN connections and a pfSense firewall installed. Here are the steps to configure pfSense as a dual WAN load balancing and failover router: Login to the pfSense web interface and go to “System” -> “Routing.” In the “Gateway … Read more
Debian provides security patches and updates for its systems through its package management system, “apt.” To apply security patches and updates on a Debian system, you can follow these steps: Update the package list: Before you can install any updates, you need to have the latest package list. Run the following command to update the … Read more
To see the CPU temperature on CentOS 7 / Red Hat Enterprise Linux 7, you can use the “lm_sensors” package. This package provides tools to monitor the temperature of various system components, including the CPU. To install the “lm_sensors” package, run the following command: # yum install lm_sensors Once the package is installed, you can … Read more
To see information about PCI devices on CentOS 7 / Red Hat Enterprise Linux 7.x / 8.x, you can use the “lspci” command. The “lspci” command is a part of the “pciutils” package and can be installed by running the following command: # yum install pciutils Once the package is installed, you can run the … Read more